OEM / ODM Custom Interconnect Solutions
Custom Magnetic Cable Assembly

Round Magnetic Connector Pair with Cable Lead

A custom round magnetic connector pair with a concentric mating interface and a cable-terminated connector half. One central contact position and a surrounding ring structure are visible, while the actual electrical contact count, return path, voltage, current capability, mounting method and magnetic retention are defined according to the approved project drawing.

Confirm the Complete Cable Assembly
Magnetic End Pin count, shape and mating direction
Cable Construction Length, conductor and outer jacket
Opposite Termination USB, Type-C, DC or custom wire end
Electrical Functions Power, signal, detection or control

A Magnetic Cable Is More Than the Connector End

The finished assembly must define the magnetic mating component, internal conductor arrangement, cable construction and the opposite-end connection as one complete electrical system.

01

Magnetic Mating Interface

Confirm Pin count, contact allocation, magnet arrangement, connector shape, polarity control and mating direction.

02

Cable Construction

Define cable length, conductor count, wire specification, shielding requirements, jacket and flexibility.

03

Opposite-End Termination

Select USB, Type-C, DC plug, bare wire, terminal, PCB connection or another customized termination.

04

Device-Side Integration

Confirm installation space, outlet direction, strain relief, exposed-contact state and user operation.

ROUND MAGNETIC CONNECTOR PAIR

Engineering Summary

This round magnetic connector is a mating connector pair with a concentric circular interface. One connector half is configured with a cable lead, while a separate cylindrical mating connector forms the opposite side of the interface.

One central contact position and a surrounding concentric ring structure are visible. The actual electrical contact count and the function of the outer ring must be defined by the approved wiring and connector drawings.

Magnets primarily assist capture and retention during mating. Final position, alignment and seating should be established by the circular housing, mating surfaces and mechanical datums rather than by magnetic attraction alone.

Connector Pair Architecture

The visible assembly consists of a cable-terminated round connector and a separate mating connector. This should be treated as a magnetic connector pair rather than automatically classified as a finished magnetic charging cable.

Connector Type Round magnetic connector pair

Cable-Side Cable-terminated connector half

Mating Side Separate circular connector

Geometry Concentric round interface

Electrical Contact Count and Return Path

One central electrical contact position is visible, but the complete electrical contact count cannot be determined from the product image alone.

The approved wiring diagram should identify the electrical function of the center contact, the surrounding ring and every conductive path through the connector pair.

Center Contact Function → To Be Confirmed
Outer Ring Function → To Be Confirmed
Complete Return Path → Defined by Approved Wiring Diagram

If the surrounding ring is used as an electrical return contact, its material, surface finish, mating resistance, termination method and mechanical seating condition should be included in the complete electrical validation.

Cable-Side and Device-Side Integration

One connector half is visibly terminated to a cable lead. Cable length, wire gauge, conductor count, cable jacket, strain relief and the opposite end of the cable should be defined according to the project.

The mounting and termination method of the separate mating connector must also be confirmed. PCB, FPC, wire, panel, housing or another structure should only be stated after the approved mechanical drawing defines the actual installation.

The connector pair and cable lead should be reviewed as part of the complete conductive and mechanical system rather than as isolated components.

Magnetic Capture and Mechanical Seating

The magnetic structure assists the two round connector halves during approach and helps retain the interface after engagement.

Capture force, retention force, separation force and peel force describe different mechanical conditions. A single magnetic-force number should not be used without defining the mating condition and measurement direction.

Final position, alignment and seating should be established by the concentric housing geometry, mating surfaces and mechanical datums.

Stronger magnetic retention is not automatically better. The required holding and release behavior should be selected according to cable direction, device mass, mounting strength and expected user or machine interaction.

Rotational Mating and Polarity

A round connector should not automatically be described as providing unrestricted 360-degree electrical mating.

Rotational freedom depends on the electrical symmetry of the center contact and outer ring, polarity requirements, mechanical keying and the mating-side connector architecture.

If rotational mating is required, the permitted rotation and electrical behavior should be defined in both the electrical and mechanical drawings.

Contact Compliance and Working Stroke

The product image confirms a central contact position, but the internal spring-loaded mechanism cannot be determined from appearance alone.

If a pogo contact is used, the approved drawing should separately define working stroke, total travel, spring force and installed compression.

Working stroke represents the intended operating compression and should not be confused with total available travel.

The mechanical connector housing should establish the final seated position. A spring-loaded contact should provide electrical connection and controlled Z-axis compliance rather than act as the primary mechanical hard stop.

Current Capability and Complete Conductive Path

Current capability cannot be determined from the diameter of the round connector or center contact alone.

Source → Cable / Wire → Cable-Side Termination → Magnetic Connector Pair → Contact Interface → Mating-Side Termination → PCB / Wiring → Load → Confirmed Return Path

Vdrop = I × Rpath
Ploss = I² × Rpath

Wire gauge, cable length, termination resistance, center-contact resistance, return-path resistance, mating condition, PCB or device wiring and temperature rise should be evaluated together before releasing a continuous-current rating.

Continuous current and peak current should be specified separately when the application includes intermittent or transient loading.

Environmental and Reliability Validation

Corrosion resistance, mating-cycle capability and operating-temperature performance depend on the actual contact materials, plating, housing, cable construction and operating environment.

A recessed circular interface does not by itself establish a waterproof rating.

An IP rating should only be stated after the complete connector pair, installation structure, device enclosure and sealing system have been defined and tested.

Product Specifications

SpecificationDetails
Product TypeRound Magnetic Connector Pair
ShapeRound / Circular
Mating GeometryConcentric Circular Interface
Pair ConfigurationCable-Side Connector + Separate Mating Connector
Electrical Pin CountTo Be Confirmed
Central ContactOne Visible Contact Position
Outer Ring FunctionTo Be Confirmed
Return PathDefined by Approved Wiring Diagram
Cable-Side TerminationCable / Wire Lead
Mating-Side TerminationTo Be Confirmed
Mating-Side MountingTo Be Confirmed
Magnetic FunctionCapture + Retention
Final Position / AlignmentControlled by Mechanical Mating Geometry
Rotational MatingTo Be Confirmed
VoltageProject-Specific
Continuous CurrentTo Be Confirmed
Peak CurrentTo Be Confirmed
Current CapabilityValidate Complete Conductive Path
Contact TypeTo Be Confirmed
Working StrokeTo Be Confirmed
Total TravelTo Be Confirmed
Magnetic RetentionProject-Specific
Material / PlatingTo Be Confirmed
Cycle LifeTo Be Confirmed
Operating TemperatureTo Be Confirmed
IP RatingTo Be Confirmed at Complete Assembly Level

Customization Options

CTP can review the complete round magnetic connector pair around the customer’s electrical, cable, mounting and mechanical requirements.

  • Electrical contact count and contact functions
  • Center-contact and outer-ring allocation
  • Power and return-path architecture
  • Operating voltage and continuous / peak current
  • Cable lead length and wire gauge
  • Cable-side strain relief and outlet direction
  • Mating-side PCB, FPC, wire or housing integration
  • Round connector dimensions and mating depth
  • Rotational and polarity requirements
  • Magnetic retention and release behavior

Explore related Round Magnetic Connectors for other circular connector architectures.

Application Fit

This round magnetic connector pair can be evaluated for products requiring a detachable circular power or charging interface with one connector half already terminated to a cable lead.

  • Compact electronic equipment
  • Detachable power interfaces
  • Charging and docking equipment
  • Portable devices
  • Automation modules
  • Customer-defined power interfaces

Final application suitability depends on the approved electrical architecture, mounting method, cable construction, mating geometry and environmental requirements.

Information Engineers Should Provide

  • Actual electrical contact count
  • Center-contact function
  • Outer-ring function
  • Complete power and return-path wiring diagram
  • Operating voltage
  • Continuous and peak current
  • Allowed voltage drop and temperature rise
  • Cable lead length and wire gauge
  • Mating-side termination and mounting method
  • Available X / Y / Z installation space
  • Connector OD and mating depth
  • Contact structure and working stroke
  • Rotational and polarity requirements
  • Retention, separation and peel requirements
  • Environmental requirements
  • 2D / 3D drawings when available
  • Expected project volume

FAQ

Is this product a magnetic connector or a magnetic cable?

This product is treated as a round magnetic connector pair. One connector half is cable-terminated, but the magnetic mating interface and separate mating component define the core connector architecture.

How many electrical contacts does this round connector use?

One central contact position is visible, but the actual electrical contact count must be confirmed because the surrounding ring may have an electrical, magnetic or mechanical function.

Is the outer ring an electrical return contact?

This cannot be confirmed from appearance alone. The outer-ring function and complete return path should be defined by the approved wiring diagram.

Is one side of the connector supplied with a cable lead?

The visible reference configuration includes a cable-terminated connector half. Cable length, wire gauge, jacket and opposite-end termination should be defined according to the project.

What voltage and current can this magnetic connector support?

Voltage and current are project-specific. Current capability should be validated across the complete conductive path, including the cable lead, connector contacts, return path, mating-side termination and device wiring.

Does the round connector support 360-degree mating?

Circular geometry alone does not establish unrestricted rotational mating. Contact symmetry, polarity, mechanical keying and the approved electrical architecture must be confirmed.

How should magnetic force be specified?

Capture force, retention force, separation force and peel force should be distinguished. The required value depends on the mating direction, cable routing, mounting structure and release behavior.

Can the mating-side mounting structure be customized?

Yes. PCB, FPC, wire, cable or housing integration can be evaluated according to the approved electrical and mechanical design.

Is this round magnetic connector waterproof?

No IP rating should be assumed from the round or recessed connector shape. Environmental protection must be validated for the complete connector pair, device installation and sealing structure.

What information is required for a custom round magnetic connector?

Provide the contact functions, return path, voltage, continuous and peak current, cable requirements, mating-side mounting method, available X/Y/Z space, connector dimensions, magnetic requirements and available 2D or 3D drawings.

CUSTOM ROUND MAGNETIC CONNECTOR DEVELOPMENT

Request an Engineering Review

Send CTP your contact functions, complete return-path design, voltage, continuous and peak current, cable-lead requirements, mating-side termination, available installation space, connector dimensions, magnetic retention and release requirements and available device drawings. Our engineering team can review the complete connector interface before quotation and sample development. Request Custom Quote & Samples

Engineering Review for Round Magnetic Connector Pair with Cable Lead

This product page presents a CTP magnetic cable assembly configuration for engineering reference. Final dimensions, electrical ratings, materials, magnet structure, sealing level and reliability targets are not universal values; they are confirmed against the approved drawing, installation condition and model-specific validation plan.

Information to provide for evaluation

  • source-side interface and device-side magnetic head
  • pin definition, current, voltage and signal requirements
  • cable length, conductor, jacket, shielding and strain relief
  • magnetic retention, polarity, sealing, color and packaging
  • sample quantity, validation plan and forecast volume

How specifications are confirmed

CTP reviews the application and prepares a drawing or specification for approval before sample production. Test scope, acceptance criteria and report format should identify the model, sample status, method, conditions, result and review date.

Can this magnetic cable assembly be customized?

Yes. Customization can cover geometry, contact layout, materials, cable construction, magnetic structure, sealing and appearance. Feasibility depends on the application and approved specification.

Are the electrical and waterproof values universal?

No. Current, voltage, resistance, temperature rise and ingress-protection claims apply only to the identified model and stated test conditions.

What determines sample and production timing?

Timing is confirmed after the drawing, materials, tooling, sample quantity, validation scope and production requirements have been reviewed.

Information Required Before Cable Development

A reference product image is not enough to define a cable assembly. Confirm the following information before drawing, sampling or quotation review.

1. Pin Map Define power, return, signal, control, detection and unused contacts.
2. Voltage and Current Provide voltage, continuous current, peak current and operating cycle.
3. Cable Length Confirm finished length, tolerance, moving conditions and routing path.
4. Wire Construction Define conductor count, wire requirement, shielding and outer-jacket conditions.
5. Opposite-End Interface Confirm USB, Type-C, DC, terminal, bare wire or custom connection.
6. Mechanical Conditions Provide available space, outlet direction, strain relief and mating requirements.

From Cable Requirements to Project Validation

The exact project route depends on whether an existing product can be used, modified or requires a new cable assembly design.

01

Requirement Review

Confirm product scope, Pin Map, cable length, termination, quantity and application conditions.

02

Cable and Connector Mapping

Match magnetic contacts to conductors, source-side wiring and device-side functions.

03

Drawing and Sample Scope

Confirm dimensions, outlet direction, cable construction and required sample configuration.

04

Validation and Production Review

Review electrical, mechanical and environmental conditions before production approval.

Have a Cable Drawing, Pin Map or Device Requirement?

Submit the magnetic-end structure, electrical functions, cable length, conductor requirements, opposite-end interface, installation space and available drawings for project review.

Submit Magnetic Cable Requirements